402 E. S. GOODEICH. 



Fig. 14. — Section through the fourth region of the nephridial canal. The 

 lumen not being straight, the wall of the canal is cut through here and there. 

 Corr. hsemat. Zeiss apochr. 4 mm., oc. 4, camera. 



Fig. 15. — Portion of a transverse section, showing the dorsal muscle and 

 dorsal ciliated organ cut through. Corr. hsemat. Zeiss B., oc. 4, camera. 



Fig. 16. — Longitudinal section through a piece of the third region of the 

 nephridial canal. Corr. hsemat. Zeiss apochr. 4 mm., oc. 4, camera. 



Fig. 17. — Portion of a horizontal section, about midway through the intes- 

 tine. Corr. bor. car. Zeiss A., oc. 3, camera. 



